Apparatus for drying green brick



" UNI-TE STATES HENR'YIDICKSON, or rr r rsnune, PENNSYLVANIA.

APPARATUS FOR'DRYING' GREEN BRICK.

SPECIFICATION forming part of Letters Patent No. 290,323, dated December 18, 1883,

Application filed August-16, 1883. (No model.)

To all whom it may concern.-

Be it known that I, HENRY DIOKSON, of Tustin street, Pittsburg, Pennsylvania, have invented a new and useful Improvement in Apparatus for Drying Green Brick, which improvement 'is fully set forth in the following specification, reference being had to the accompanying drawings.

Similar letters of reference indicate corresponding parts.

,My invention relates to an improvement in apparatus for drying brick; and it consists in transmitting the heat of steam to the freshly-molded or green brick, in the manner and by the means which will hereinafter fully and at large appear.

Figure 1 is a top view or plan of the pipes I employ for transmitting the heat of steam to the brick to be dried. Fig. 2 is a transverse section of the drying-floor and the pipes embedded therein, said section of the pipes being at line 00 a: of Fig. 1. Fig. 3 represents 'a transverse sectionol" the same at line 0 c of Fig. 1.

In drying freshly-molded or green brick, I utilize the exhaust-steam of the engine, and when more heat is required than that produced by the exhaust-steam I combine with said exhaust-steam steam direct from the boiler or steam-generator. By the employ ment of steam and transmitting the. heat thereof to the freshly-molded or green brick, uniformity or an even distribution of heat to all parts of the drying-floor'is secured, which is a great desideratum in the operation of dry ingfreshly-molded or green brick. The em ployment of steam for the purpose of transmitting its heat to the freshly-molded brick greatly diminishes the cost. of drying the same, and experience has demonstrated that about one-half of the time usually required in the drying process is saved.

A B represent two pipes, which communicate with each other through the medium of pipes O, in the manner indicated in Fig. 1, the pipes A and B being of greater diameter than the pipes G. The pipes A, B, and G, coupled together, as shown in Fig. 1, are embedded in sand, and on this is placed a coating of plastic clay, as shown at E, thereby forming a drying-floor for the freshly-molded brick F.

To the pipe A is connected apipe, g,which communicates with the exhaust-port of the steam-engine h, said engine being supplied with steam from the boiler or generator j through the medium of pipe 6, which may be supplied with steam through the medium of a pipe, on. The pipes z, m, and g are fornished with valves. Marked 1, 2, 3, 4, and 5.)

The outline of the building which covers the drying-floor is marked k.

The drying-floor being constructed as hereinbefore described, the operation of my pro cess, combined with the apparatus, isas fol lows: The valve 1 of pipe 1; is open, and the valves 2 and 5 of pipe 9 are opened,the steamvalve 1 allows the steam to flow through pipe 4; into the cylinder of the engine h, and the opening of the valves 2 and 5 allows the exhauststeam to flow through pipe 9 into the pipe A, from which it flows through pipes 0 into pipe B, thereby circulating the exhauststeam throughout the whole series. The product of condensation may be carried off through pipe I), which is furnished with a valve, 6. WVhen the exhauststeam is insufficient, the valve 3 of pipe on may be opened slightly for combining with the exhaust-steam steam direct from the boiler by means of pipe 1'. In case the steam-engine is not in use, the

steam direct from the boiler may be used. When it is not desirable to allow either the to said system of pipes A B O, the latter being arranged in the form of a frame under the floor of a kiln, for the purposes set forth.

2. A series of pipes communicating with directly with the boiler, in combination with my invention I hereto set my hand in presvalves for shutting off or opening eommunience of two witnesses.

290,323 the exhaust-port of a steam-engine, and also In testimony that I claim the foregoing as 1 cation with either or both of these sources of HENRY DICKSON. 1 5 steam-supply, and a system of drying-pipes YVit-nesses:

arranged under the floor of a kiln and re- MAX SCIIAMBERG,

ceiving steam from the firstfinentioned series. JAMES A. FETZER. 

